International Journal of Civil EngineeringIJCEEngineering & Technologyhttp://ijce.iust.ac.ir18agent21735-05222383-387410.22068/IJCEenjalali1389121gregorian20113191online1fulltextenThe optimal TADAS damper placement in moment resisting steel structures based on a cost-benefit analysis Structure-EarthquakeStructure-EarthquakeResearch PaperResearch Paper<p>In this paper, the optimal location and characteristics of TADAS dampers in moment resisting steel structures, considering the application of minimum number of TADAS dampers in a building as an objective function and the restriction for destruction of main members is studied. Genetic algorithm in first generation randomly produces different chromosomes representing unique TADAS dampers distributions in structure and the structure corresponding to each chromosome is time history analyzed. Then the damage index for each member and the average weighted damage index for all members are determined. Genetic algorithm evaluates the fitness of each chromosome then selection and crossover as logical operators and mutation as random operator effect the current generation's chromosomes according to their fitness and new chromosomes are generated. Accordingly, successive generations are reproduced in the same way until the convergence condition is fulfilled in final generation and four distributions are suggested as better options. Since these proposed distributions are selected under the one earthquake, therefore, it is better that the four new structures are cost-benefit analyzed in different earthquakes. Finally, the optimal placement for dampers is compared and selected based on a benefit to cost ratio, drift stories and the number of different TADAS types of such structures. The increase in amount of energy dissipated via dampers located in different floors as well as the status of plastic hinges in main members of the structure strengthened with optimum option are the proof of the optimal placement and suitable characteristics for dampers.</p>
Optimal location, TADAS dampers, Destruction of main members, Genetic Algorithm, Cost-benefit analyze, Dissipation energy2332http://ijce.iust.ac.ir/browse.php?a_code=A-10-460-1&slc_lang=en&sid=1 M.H. Sebtsebt@aut.ac.ir18003194753284600100841800319475328460010084Yes
Amirkabir University of TechnologyA.Yousefzadeha_yousefzadeh@aut.ac.ir18003194753284600100851800319475328460010085NoAmirkabir University of TechnologyM.Tehranizadeha37@aut.ac.ir18003194753284600100861800319475328460010086NoAmirkabir University of Technology